Stone-spreader



W. M. SCOTT...

STONE SPREADER.

APPLICATION mm Y 3, m1.

Patented Apr. 27, 1920.

3 SHEETS-SHEET I.

lwmmor mummy. 5cm,

Mamet) STONE SPREADER; APPLICATION FILED MAY 3, I917.

1,338, 161 Patented Apr- 27, 1920.

7 FIG Y 3 SHEETS-SHEET 3.

- UNITED STATES PATENT OFFICE.

WILLIAM msoo'rr, or rnrmminrnm, rnmvsrtvanm.

STONE-SPREADER.

To all whom it may concern.-

Be it known thatI, WILLIAM M. Soo'rr,

' of Philadelphia, in the county of Philade1 phia and State of Pennsylvania, have invented certain new and useful Improvements in Stone-Spreaders, whereof the fol lowing is a specification, reference being had to the accompanying drawings.

My invention relates to a self-propelled vehicle which carries means for transporting road materials, such as sand, gravel or crushed stone, and spreading them upon the road. Means may be mounted upon the vehicle for'loading the road materials there-. on. As a useful ad'unct the road material is cleaned before it 1s spread.

Themechanism for accomplishing these I functions may be operate'dby means of the same prime mover b which the vehicle is propelled, and suita 1e clutches and connections being provided, whereby the differout parts of the device may be separately. or simultaneously put into operation as desired. I

1n the accompanying drawings, which show a preferred method of embodying my invention, Figure I, is a side elevation of the stone spreader. r

Fig. II, i s a rear elevation showing the details of the spreading device. I Fig. III, is an enlarged view of the disk drive for stonespreader. 1

Fi IV, is a plan view of parts shown in F1 II, I

Fig. V,- is an enlarged partlysectional view of the rear portion of the machine illussprea 1n mechanism.

' and operatin tratin more' fully certain parts of the Fig. is an enlarged sectional elevation of the disk drive. I

I have shown my device as mounted "upon, in connection with a motor truck of stan ard construction, of which the chassis 1, is strong enough to carry the weight of the parts about to bedescribed. It is driven by a 'sufiiciently powerful engine 2,

. to' not only operate the truck, but to simultaneously operate other working parts as desired.

The main engine shaft drives by a suitable connection, as the chain 3, a countershaft 4, by means of which the prime mover transmits its rotation to the various operative devices. These deyices comprise a crane for loading road material on the vehicle; a bin for carrying such material freely upon its support. revoluble part is the gearedsector plate 31,. meshing with a worm 32, the shaft of'which Specification of Letters Patent. Patented Apr. 27, 1920- 'LPPliGfifiOh flled May 3, 1917- sfllifll K0. 168,073.

provided with a distributin device, or

spreader; and a cleaning device. will describe in order. v

The crane comprises a standard 5, revolubly mounted upon a h draulic cylinder 6, and having pivoted to it the arm 7. From the end of the arm is suspended a clam shell bucket 8, suitable for loading road material, such as stone, from piles located at able wire rope 9, wh1ch after being led over and under pulleys, is'wrapped around the multiplying pulleyslO, and 11, of whichthe latter is fixedly mounted upon the hydraulic cylinder. 6 while the former is controlled by means of a pump indicated at '20, driven by a chain drive 21, from the countershaft 4, the connection being subject to an interposed clutch 25, upon engagement of which the'rotation" of the countershaft is caused to be transmitted to the pump.

The upper partof the crane revolves Attached .to "the carries opposed bevel gears 33, 33, shiftable by a hand lever 34, to engage alternately the bevel gear 35, on the auxiliary shaft 36,

driven by a suitable chain 37, from the countershaft 4, with interposition of a clutch 38, by means of which the operative parts which have just been describedmay be cut ofi from operation by the shaft -as de sired. The arm 7, of the derrick is stayed to the top of the standard by adjustable link stay 40.-

. Onthe rear'part of the vehicle there-is mounted a bin 45, provided with'a sloping bottom 46, for the more ready dischar e o the material containedthereinr The ower part of this bin opens freely into the spread mg compartment 48, which extends transversely from side to side of the machine,

' and discharges from its lower end which is open. To assist in the distribution of the road material this spreadin compartment These intervals along the road, or from railroad) cars. The bucket is supported'upon a suithas a series of bolts 49, crossmgit near the I opening, the bolts being set in alternating relation to each other, so that 'the stone falling out of the compartment is thoroughly nation of the thread of each screw is such that road material will not flow down unless the screw is revolved; but if'rotated a free These feed screws flow may be maintained. are mounted on short vertical shafts 53, each of which carries a bevel gear 54, engaging a similar bevel gear 55, set on the transverse shaft 56, which is driven by a chain 57, from the short shaft 58. This latter shaft carries a driven disk 59, the periphery of which is a in contact with the surface of the driving disk 60, set on the end of the shaft 61, driven by the chain 62, from the countershaft 4,

with interposition of a clutch 65, by which the entire spreader mechanism may. be thrown out of operation. The driving disk 60, is slidably mounted upon its shaft under the pressurev of a coiled spring 66, whereby the proper pressure is obtained to transmit the power from one disk to the other. The rate of feed is capable of regulation by the .lateral adjustment of the driven disk 59,

upon its shaft, for which purpose the shaft is (providedwith a perforated keyway 70, an

the disk with a collar which may slide,

over the keyway and be adjusted thereon by the set screw 71.

The shaft 58, is mounted in sliding bearings 72, and; is capable of lateral translation therein by the operation of the bell crank lever 73, one arm of which is connected by link 7 4, to clutch lever 75. By the I last named connections the operation'of the clutch lever 75, can instantly disconnect the driving and the driven'disks, and occasion the cessation of the action of the feeding mechanism.

For cleaning the stone an airduct 80, is'

provided coincident with one side of the spreading compartment with which it communicates by means of apertures '82, near its lower end. This air duct 80, communicates by a flue 83, with a fan 84, driven by a chain drive 85,, from'thecountershaft 4, with interposition of the clutch 86. The fan com artment communicates by fine 87, with a ust bin 88, valved at the bottom,

whereby the dust which the operation of the I fan causes to bedrawn from the stone and deposited in the dust bin may-be allowed to accumulate until it is from time to time discharged.

The operation of my device is as follows: Road material is from which wheel of the vehicle.

During the feeding operatlon the spreadtime to time 'loaded and bucket: The means for. operating the crane from the prime mover of the vehicle have been fully described. The bin being full the. vehicleisrun along the road upon I the material is t o be distributed. In case the material is stone and. thesurface of the road has already'been covered with tar orother binding material, it ispreferable 'to. runthe vehicle backward over the road in order that'the wheels may travel over the clean material which has been spread, rather than over the tarred surface, of the road, and forthis purpose a seat 90, isprovided on the dashboard, near the steering ing screws are rotated at a properspeed to accomplish efficient spreading of the material varying according to the speed at which the-vehicle is run over the road. .In orderthat unscreened stone may beused and spread as loaded direct from the railroadcars, the cleaning draft is provided, bythe' operation of which the suction of the air drawn in through the lower end of the spreading compartment carries with it the fine dust and deposits it in, the dust bill, from which it mafi' be from time to time discarded.

aving thus described my invention, I claim:

1. A stone-spreader comprising a vehicle, a stone bin thereon, vertical feed-ways lead ing from the bottom of the stone bin, vertical feed-screws rotatably mounted in said feed-ways, means for rotating said feedscrews at any desired rate, independent of the motion of the vehicle the inclination of the thread of the feed-screws being. such that the. material will not flow down the screw unless it is rotated. 2. A stone'spreader including in combination, a bin, spreading com artments with which the bottom of the bin cates, a vertical feed screw located in each spreading compartment and terminating at t e end of said spreading compartment, and

'- means for operating said feed screws.

- 3. A stone-spreader comprising a stone bin, a transverse spreading compartment communicating with the bin, wherein the stone descends in a state of distribution'and separation, andf'a pneumatic suction cleaning device communicating with said spreadin compartment 'so as to act -on the divided an separated stone descending therein.

ely communi- 4. A stone spreader including in combination, a stone bin, a' transverse spreading compartment freely communicating with the bin and having'means adjacent its pointof discharge for distributing the stone,'a suction flue in communication with the spreading. compartment adjacent said distributing and separating means, and means for applying suction thereto,.whereand separating v spreading compartment freely communicab mg with the bin, vertlcal feed screws rota-,

tably mounted in said compartment, a pneumatic stone cleaning device communicating with the spreading compartment 1n the region of its discharge, and means for apmay be removed from the stone as'it passesplying suction thereto, whereby fine dust through thespreading compartment 6. A stone spreader including in combination, a stone bin, spreading compartments leading from said bin, a feed screw for each compartment, and, means for driving the feed screws including a friction disk control device, whereby the speed of the feed screws may be varied.

In testimony whereof I have hereunto signed my name at Philadelphia, Pennsylvania, this thirtieth da of April, 1917.

WIL IAM M. SCOTT. W itnesses:

' JAMES H. BELL,

E. L. FULLER'mN. 

